درخت حوزه‌های تخصصی

This research was conducted with the aim of integrating practical and theoretical strategies to enhance the motivation for sports participation among workers. The design of this research was cross-sectional and correlational. The statistical population of the present study consisted of all employees of Iranol Oil Company in Tehran in 2020, totaling 890 individuals. Among them, 261 were selected based on the Krejcie and Morgan table using the available sampling method. In this study, the tools used were the Sports Participation Motivation Scale (Gill et al., 1984), the Cognitive Emotion Regulation Questionnaire (Garnefski and Kraaij, 2006), and the Subjective Vitality Scale (Ryan and Frederick, 1997). Additionally, structural equation modeling was used to test the research hypotheses. The research findings indicated that the model had a good fit. Accordingly, the findings showed that in the final model, the standardized path coefficients for adaptive and maladaptive emotion regulation on sports participation motivation were 0.17 and -0.40, respectively. Therefore, the skill of emotion regulation (practical strategy) was significant in the relationship between the feeling of vitality (theoretical strategy) and sports participation motivation. Using the results obtained from the developed model of sports participation motivation, a foundation is laid for creating practical programs to improve the inclination towards sports participation among various segments of the population. Additionally, implementing interventions to educate individuals on learning emotion regulation strategies through changes in cognition and behavior to achieve greater self-regulation provides a practical basis for increasing sports participation. Ultimately, focusing on enhancing community vitality serves as a theoretical approach to reducing maladaptive emotion regulation, thereby fostering the growth of sports participation motivation.

Visual impairment significantly impacts physical activity participation, often leading to reduced fitness levels among affected individuals. This study aims to compare the physical fitness characteristics of male and female goalball athletes aged 14-20 years, a critical developmental period for performance enhancement. A total of 100 athletes (50 male, 50 female) were assessed for strength, endurance, power, flexibility, and balance through various standardized tests. Results indicated significant differences in hand grip strength, medicine ball throw distance, vertical jump, and balance, with males outperforming females (p < 0.05). No significant differences were found in push-up and sit-up performance, suggesting comparable endurance capabilities across genders. These findings underscore the necessity for gender-specific training regimens to address identified disparities, particularly in strength and power. The study contributes to a limited body of literature on the physical fitness of goalball players and highlights implications for inclusive training strategies that enhance athletic performance regardless of gender. Future research should explore the correlation between physical fitness attributes and on-court performance metrics to further inform coaching practices.

The aim of the study is to determine the effect of e-commerce platforms with the mediating role of customer-related factors on the intention to purchase sportswear and the presentation of the model. The present study is applied and descriptive. The statistical population of the study is 420 sportswear customers in Rasht. The field data collection method, the data collection tool, the standard questionnaire, and the data analysis method, structural equation modeling were used, and the reliability of the tool was confirmed through Cronbach's alpha and the composite reliability and construct validity through convergent and divergent validity using factor analysis. After a descriptive study of the variables, the factor structure analysis technique and path analysis were used, and the path coefficients for the variables were examined using PLS3 software. The results of the study showed that e-commerce platforms, customer satisfaction, customer loyalty, customer purchase behavior, and customer perceived value did not have a significant relationship on purchase intention, and customer perceived value, customer purchase behavior, customer loyalty, and customer satisfaction mediated the relationship between e-commerce platforms and purchase intention. From the results of the research, it can be concluded that by creating a reliable and secure platform that introduces sports products well and makes the shopping process easy for the customer, it can lead to customer satisfaction and repeat purchases; therefore, it is recommended that managers of sportswear stores use social media platforms and media to introduce and sell their products in order to grow and survive in today's competitive market.

Objective : Athlete burnout remains a significant concern in competitive sports, with growing evidence highlighting its detrimental effects on performance and mental health. This study examined the efficacy of a Choice Theory-based intervention in reducing burnout symptoms by enhancing autonomy and psychological need satisfaction among elite athletes. Method: Using a longitudinal, randomized controlled design, 156 elite athletes (aged 18–32) from endurance, team, and skill-based sports were allocated to either an 8-week Choice Theory intervention group or a control group receiving standard mental skills training. The intervention incorporated weekly workshops on need identification, cognitive restructuring ("choose to" vs. "have to" thinking), and autonomy-supportive goal setting, alongside coach training in autonomy-supportive communication. Burnout was assessed using the Athlete Burnout Questionnaire (ABQ), while psychological needs were measured via the Basic Psychological Needs Satisfaction in Sport Scale (BPNSSS). Physiological markers (salivary cortisol, heart rate variability) provided objective stress indicators. Results : Results demonstrated significant reductions in emotional exhaustion (p < 0.01, d = 0.72) and sport devaluation (p < 0.05, d = 0.54) in the intervention group compared to controls at 12-month follow-up. Mediation analysis revealed that increased autonomy (β = -0.38, p < 0.001) and competence (β = -0.29, p < 0.01) fully mediated burnout reduction. Physiological data corroborated these findings, with improved HRV recovery (p < 0.05) and lower cortisol levels (p < 0.01) in the intervention group. Conclusions : These findings support Choice Theory as an effective framework for athlete burnout prevention, emphasizing the critical role of autonomy-supportive environments in sustaining long-term athlete well-being. The study advances current practice by demonstrating that structural changes in coaching approaches—particularly empowering athletes with meaningful choices—can significantly mitigate burnout risk. Future research should explore the generalizability of these effects across diverse athletic populations and cultural contexts.